text: 'use strict';
  var $ = require('../internals/export');
  var toObject = require('../internals/to-object');
  var toLength = require('../internals/to-length');
  var toInteger = require('../internals/to-integer');
  var addToUnscopables = require('../internals/add-to-unscopables');
  
  // `Array.prototype.at` method
  // https://github.com/tc39/proposal-relative-indexing-method
  $({ target: 'Array', proto: true }, {
    at: function at(index) {
      var O = toObject(this);
      var len = toLength(O.length);
      var relativeIndex = toInteger(index);
      var k = relativeIndex >= 0 ? relativeIndex : len + relativeIndex;
      return (k < 0 || k >= len) ? undefined : O[k];
    }
  });
  
  addToUnscopables('at');
  